148 FOSSIL EEMAIXS OF MAN. 



muscles are not excessively prominent, they are well 

 marked, and taken together with the apparently well de- 

 veloped frontal sinuses, and the condition of the sutures, 

 leave no doubt on my mind that the skull is that of an 

 adult, if not middle-aged man. 



The extreme length of the skull is 7.7 inches. Its ex- 

 treme breadth, which corresponds very nearly with the 

 interval between the parietal protuberances, is not more 

 than 5.4 inches. The proportion of the length to the 

 breadth is therefore very nearly as 100 to 70. If a line 

 be drawn from the point at which the brow curves in 

 towards the root of the nose, and which is called the ' gla- 

 bella ' (a), (fig. 23), to the occipital protuberance (5), and 

 the distance to the highest point of the arch of the skull 

 be measured perpendicularly from this line, it will be 

 found to be 4.75 inches. Viewed from above, fig. 24 A, 

 the forehead presents an evenly rounded curve, and passes 

 into the contour of the sides and back of the skull, which 

 describes a tolerably regular elliptical curve. 



The front view (fig. 24 B) shows that the roof of the 

 skull was very regularly and elegantly arched in the 

 transverse direction, and that the transverse diameter was 

 a little less below the parietal protuberances, than above 

 them. The forehead cannot be called narrow in relation 

 to the rest of the skull, nor can it be called a retreating 

 forehead ; on the contrary, the antero-posterior contour of 

 the skull is well arched, so that the distance along that 

 contour, from the nasal depression to the occipital protu- 

 berance, measures about 13.75 inches. The transverse arc 

 of the skull, measured from one auditory foramen to the 

 other, across the middle of the sagittal suture, is about 13 

 inches. The sagittal suture itself is 5.5 inches long. 



The supraciliary prominences or brow-ridges (on each 

 side of a. fig. 23) are well, but not excessively, developed, 



